.city_list {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.city_list_top {
  width: 100%;
  height: 50px;
  background: #ccc;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.city_list_top:first-child {
  font-size: 20px;
}

.city_list_content {
  flex: 1;
  padding: 0 20px;
  overflow-y: auto;
}

.city_list_content li {
  font-size: 18px;
}
